Dens Invaginatus — NDEB AFK MCQ
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Correct answer: A — Dens invaginatus (dens in dente)
Dens invaginatus (dens in dente) results from invagination of the outer enamel epithelium into the inner enamel epithelium and dental papilla during tooth development, creating a tube-like channel lined with enamel extending from the cingulum pit towards or into the root. It most commonly affects the maxillary lateral incisor. The invagination creates a pathway for bacterial ingress, making the tooth susceptible to early pulp necrosis. Prophylactic sealing of the pit is recommended.
Reference: Neville – Oral and Maxillofacial Pathology, 4th ed., 2016